From waste alkaline copper etchant to mercury sorbents: Cascade etching of ZSM-5 for industrial flue gas Hg0 removal - Yaowen Chen; Xinyu Wu; Zehua Zhao; Wenhao Zhang; Qiaonan Wu; Shu Wang; Fei Ye; Qiang Zhou; Yifan Xu (Journal of Environmental Management, 2026)